We are off down to Cornwall in a wee while for a week. Since we are taking the dogs, there will be no room left in the car for the luggage so I wanted to get a roof box.

Initially I was going to just pop down to Halfords and see what they had, but since I had to search to see if they had any available, I thought I would have a look online to see what was out there.

I found this site (http://www.roof-rack-supplies.co.uk/) which also has a great sister site for canoes (http://www.brighton-canoes.co.uk/). I suppose if you have a canoe, you would need a fairly decent rack to put it on.

Roof Racks, Bars, Carriers, Boxes & Accessories from Paddy Hopkirk, Mont Blanc & Karrite.
Roof Rack Supplies UK offers you online sales of an unparallelled range of roof bars, racks and accessories for your car & van.

Drop them an email, they are very quick at answering it and will help you out. Unlike most shops that have an online presence but never bother to read their email, this lot answered my mail in under 24 hours. They also have quite an impressive stock list from a number of suppliers.